hattersley



(No Model.)

R. L. HATTBRSLEY & J. HILL.- SHEDDING MECHANISM FOR LOOMS;

No. 434,061. Patented Aug. 12, 1890.

UNITED STATES PATENT OFFICE.

RICHARD L. HATTERSLEY AND JAMES HILL, OF KEIGHLEY, COUNTY OF YORK, ENGLAND.

SHEDDlNG MECHANISM FOR LOOMS.

srncrrrcnrron forming part of Letters Patent No. 434,061, dated August 12, 1890."

Application filed January 7 1890- Serlal No. 336,178. (No model.)

To all whom it may concern.-

Be it known that we, RICHARD LONGDEN HATTERSLEY and J AMES, HILL, subjects of the Queen of Great Britain, residing at Keighley,,in the county of York, England, have invented certain new and useful Improvements in Shedding Mechanisms for Looms, of which the following is a full, clear, and exact description.

Our invention relates to loom -shedding mechanisms of the class wherein levers having operating-catches attached to or hinged upon their extremities are mounted about their center or middle parts upon other levers for effecting the desired changes of position in the heddles, (one style or arrangement of this class of mechanism beingfully described in the specification of our United States Patent, No. 383,465, May 29, 1888;) and our said invention consists of arranging and constructing certain parts used in connection with these said shedding mechanisms in such a manner that the object well known as lagging back (which means effecting a reversal in the direction of motion of the patternoylinder) ,may be accomplished in' the said shedding mechanisms when pattern mechanisms having peg-lags each carrying two rows or series of indicating-pegs are employed. This object we attain by the mechanism illustrated in the accompanying drawings, in which- Figure 1 is an elevation of a shedding mechanismthat may be applied to a loom in any of the well-known Ways, and Fig. 2 is a detail elevation hereinafter referred to, having the frame-work omitted for the sake of clearness.

Similar letters and figures refer to similar parts throughout both the views.

The catches a and a, the levers b and f, the needles 8, the levers t, the pattern-cylinder to, the threearmed lever e, the crownwheel a, the hogging-wheel y, the shaft y,

and the lever 2, as illustrated by the annexed drawings, answer the same ends, with the exceptions hereinafter described, as do the catches 73 and 73, the levers 68 and 47, the needles 75, the levers 7 7, the pattern-cylinder 79, the three-armed lever 25, the crownwheel 100, the nogging-wheel 103, the shaft 89, and the lever 104, respectively described in our patent, No. 383,465.

The exceptions to the similarity in the functions of the parts as above compared are the necessary mechanical alterations whereby the shaft y may be rotated at half the rate of speed as compared with that of the shaft 89 (Patent No. 383,465) relatively With the rate of speed of their respective cooperating mechanisms, this being attained by the employment of properly-proportioned driving-wheels in connection with the shaft y.

By retarding the motion of the shaft 11 that of the pattern-cylinder u is retarded, and by this we are enabled to use peg-lags 0, each having two rows or series of indicating-pegs d in connection with the said shedding mechanism, one of the said series to indicate upon one series of catcheso, while the other indicates upon the other series a through the medium of the parts above described, this method of using two rows or series of pegs d, mounted upon each lag a, being old, common, and well understood both in England and the United States.

In practice it is well known that whenever peg-lags c, with a double series of pegs d, are employed, in order that the same should operate efficiently to produce a proper opening in the warp when weaving in a straightforward manner, it is necessary to rotate the cylinder to at a certain time relatively with the time of movement of the draw-bars e and e, and we find that in order to prevent the liability of the peg-lags 0 being disarranged, so as to place the catches a and a at crosspurposes, when the direction of motion of the pattern-cylinder u is reversed to effect the process of lagging back, as above described, it is necessary that the movements of the said cylinder u should be kept in certain unison with those of the said draw-barseand e--as, for example, should the cylinder u be moved at the time the draw-bar c is making its forward movement, as, say, in the direction of the arrow 9, when performing its proper functions during the process of weaving, we have found that when the direction of motion of the said cylinder u is reversed it must be moved at the time the bar 6 is making its backward movement or opposite to that indicated by said arrow g. To effect this in accordance with this our invention We place the pins 11 and 1 on opposite sides of the nogging-wheel y, so that While the pin 1 moves the crown-wheel 0c in the direction indicated by the arrow g at the time the draw-bar e is moving in the direction of the arrow g, the

pin y when put into gear, as fully described in our patent, No. 383,465, Will 'move it in the opposite direction at the time the said bar 6 is returning or moving in its backward direction.

WVe claim- 1. The shaft y, the nogging-Wheel y, having its pins y and y arranged on opposite sides thereof, the crown-Wheel :20, the cylinderu, peg-lags 0, having two series of pegs d,

and the lever a, in combination, the same bein gal-ranged to operate substantially as herein set forth.

2. The shaft y, the nogging-wheel y, having its pins g and y" arranged on opposite sides, the crown-wheel x, the cylinder u, and the lever z, in combination, the same being arranged to operate substantially as specified.

RICI-IDr L. I-IATTER SLEY; JAMES HILL.

Witnesses:

SAMUEL HEY, J OHN WHITEHEAD. 

